Could a common supplement help sleep apnea patients? small study investigates

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Apnea-hypopnea index ≥15 events/hr on portable sleep monitoring * HbA1c \<6.5% Exclusion Criteria: * Body mass index (BMI) ≥40 kg/m2; * Diagnosis of diabetes mellitus, defined as the use of any diabetes medication (including glucagon like peptide \[GLP\]-1 agonists) currently or in the previous three months or HbA1c ≥6.5%; * Shift work (i.e., working hours that routinely cause sleep initiation after 1:00 a.m.); * Another major sleep disorder (i.e., circadian rhythm disorder, any history of narcolepsy, concurrently diagnosed or medication-treated restless legs syndrome, concurrently diagnosed or medication-treated chronic insomnia with the exception of antidepressant therapy); * Regular use (more than twice/week) of an opioid/narcotic, benzodiazepine, or prescription sleep medication other than antidepressants currently or within the last month; * The use of N-acetylcysteine in any form (oral, intravenous, inhaled) in the last seven days * The use of other over-the-counter antioxidant therapies including vitamin C or vitamin E in the preceding 10 days * History of reduced ejection fraction heart failure, or chronic cardiac arrhythmia requiring medication or treatment; * Unstable or uncontrolled medical or psychiatric comorbidity requiring hospitalization or change in medication during the previous three months; * Use of biologics or immune modulators in the last year; * Use of systemic steroids during the previous three months; * Current tobacco smoking; * Inability to sign informed consent; * Currently use of positive airway pressure therapy or another OSA treatment (e.g., hypoglossal nerve stimulator, oral device); * Recent history of alcoholism or drug abuse (within the last three months) * Neurological condition that requires ongoing pharmacological therapy (e.g., Parkinson's disease, Alzheimer's dementia, multiple sclerosis, other degenerative neurological disease). * Pregnancy